O([C:8]([C:10]1[CH:19]=[CH:18][C:17]2[C:12](=[CH:13][CH:14]=[CH:15][CH:16]=2)[C:11]=1[OH:20])=[O:9])C1C=CC=CC=1.[S:21]([OH:31])(=[O:30])([C:23]1[CH:28]=[CH:27][C:26]([NH2:29])=[CH:25][CH:24]=1)=[O:22].C[N:33](C=O)C>C(N(CC)CC)C>[S:21]([C:23]1[CH:24]=[CH:25][C:26]([NH:29][NH:33][C:8]([C:10]2[CH:19]=[CH:18][C:17]3[C:12](=[CH:13][CH:14]=[CH:15][CH:16]=3)[C:11]=2[OH:20])=[O:9])=[CH:27][CH:28]=1)([OH:31])(=[O:30])=[O:22]To 13.2 g of 2-phenoxycarbonyl-1-naphthol, 8.6 g of sulfanilic acid, 20 ml of DMF and 14 ml of triethylamine were added. The mixture was stirred at 170° C. for 5 hours. The mixture was concentrated at reduced pressure and methanol was added to the residue. The crystals thus-precipitated were collected by filtration.
Loading…